Breathable materials comprising low-elongation fabrics, and methods
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United States of America Patent
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Aug 10, 2010
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app pub date -
Jul 18, 2003
filing date -
Jul 26, 2002
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Abstract
Breathable materials comprise a low-elongation fabric layer and a microporous coating thereon. The microporous coating comprises a crystalline polymer composition and a filler. The materials are suitable for use in various applications including housewrap and other construction embodiments. Methods of making a breathable material comprise extrusion coating a low-elongation fabric layer with a composition comprising a crystalline polymer composition and a filler to form a coating on the low-elongation fabric layer, and incrementally stretching the coated nonwoven layer to render the coating microporous.
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